KR102818185B1 - Insulating Box Made By Corrugated Cardboard - Google Patents

Abstract

The present invention relates to an insulated box using cardboard that has an excellent cooling effect by using cardboard coated with aerogel and can replace Styrofoam. Its configuration includes an outer box (100) that is formed by a bottom plate and an outer side plate and thus has an open top; and an inner box (200) that is formed by an inner side plate and a top plate and is closely fitted into the opening of the outer box (100); wherein the outer box (100) and the inner box (200) are characterized in that they are made of cardboard coated with aerogel on one or both sides.

Description

Insulating Box Made By Corrugated Cardboard

The present invention relates to a cooler box, and more specifically, to a cooler box using cardboard that has an excellent cooling effect and can replace Styrofoam by using cardboard coated with aerogel.

Typically, refrigerated or frozen foods are packaged in cooler boxes and delivered to consumers. Cooler boxes are usually made of Styrofoam and contain ice or dry ice.

Styrofoam is not an environmentally friendly material, so it is best to avoid using it as much as possible. However, since nothing can surpass Styrofoam in terms of cooling effect and cost-effectiveness, it is still widely used despite its shortcomings.

There have been efforts to improve the shortcomings of Styrofoam, but there are problems such as the price being too high or the cooling effect not being perfect.

Republic of Korea Patent Registration No. 10-2248957 Republic of Korea Patent Registration No. 10-2547906

The purpose of the present invention is to provide an environmentally friendly cooler box for the above problems. More specifically, the purpose is to provide a cooler box made of cardboard that can replace Styrofoam in terms of cooling effect.

The above purpose includes: an outer box having an open top, which is composed of a bottom plate and an outer side plate; and an inner box having an inner side plate and a top plate, which is closely fitted into the opening of the outer box;

The above outer box and inner box are achieved by a cold storage box using cardboard, characterized in that they are made of cardboard coated with aerogel on one or both sides.

According to another feature of the present invention, when the inner box is completely fitted into the outer box, the height of the upper surface of the top plate of the inner box and the upper end of the side plate of the outer box may be the same.

According to another feature of the present invention, the outer side panel of the outer box may be made of two layers.

According to another feature of the present invention, the inner side plate of the inner box is made of two layers.

According to another feature of the present invention, the outer side plate of the outer box is folded in half to form two layers of a first outer side plate (121) and a second outer side plate (122); the inner side plate of the inner box is also folded in half to form two layers of a first inner side plate (221) and a second inner side plate (222); two auxiliary bottom plates (130, 140) are interposed on the upper surface of the bottom plate of the outer box; two auxiliary top plates (230, 240) are interposed on the lower part of the top plate of the inner box; a first step (150) is formed between the first outer side plate (121) and the second outer side plate (122), and the auxiliary bottom plates (130, 140) are fitted in a recessed manner into the space provided by the first step (150); A second step (250) is formed between the first inner side plate (221) and the second inner side plate (222), so that the auxiliary top plate (230, 240) can be fitted in a recessed manner into the space provided by the second step (250).

According to the present invention, a cooler box using cardboard is provided, which uses cardboard that has a cooling effect on its own by being coated with aerogel on one or both sides, and is configured in multiple layers by having an outer box and an inner box overlapped, so that the cooling effect is not inferior to that of Styrofoam.

Figure 1 is a perspective view of an assembled cooler box using cardboard according to an embodiment of the present invention.
Figure 2 is a perspective view of a combined cooling box using cardboard according to an embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line AA of Figure 1.
Figure 4 is a cross-sectional view of a joint of a cooler box using cardboard according to an embodiment of the present invention.
Figure 5 is a development diagram of a cooler box using cardboard according to an embodiment of the present invention.
Figures 6 to 8 are perspective views illustrating step-by-step the usage state of a cooler box using cardboard according to an embodiment of the present invention.

Hereinafter, the specific contents of the present invention will be described in detail with reference to the attached drawings 1 to 8.

The insulated box using cardboard according to the present invention is basically manufactured using cardboard. Furthermore, it is manufactured using cardboard coated with aerogel (K) on one or both sides. When applying aerogel (K) to one side, it is preferable that it be installed on the inner side where the contents are. The method for coating aerogel (K) is generally spraying, but various methods such as roll method, dipping method, and brushing can be adopted. In some cases, a method of bonding something manufactured in the form of a sheet or film is also possible. The thickness of the aerogel (K) layer can be 0.05 to 2.0 mm, but is not limited thereto.

The corrugated board is preferably a thick corrugated board having two layers of corrugated board. That is, the corrugated board uses one of the types called AA corrugation, BB corrugation, or AB corrugation (see Fig. 3).

Aerogel is a highly porous nanostructure that is obtained by replacing the liquid in the structure with air while maintaining the gel structure. In other words, it is a solid but has properties similar to air. Aerogel is a new material known to have excellent heat retention effects because more than 99% of the total volume is made up of empty space. It is reported that the insulation performance of aerogel is four times that of Styrofoam. Aerogel is divided into inorganic types made of silica, etc., and organic types connected by polymer chains, but either type is fine.

The cooling box of the present invention is composed of an outer box (100) and an inner box (200). The outer box (100) is composed of a bottom plate (110) and an outer side plate (120), so that the upper part is open. The bottom plate (110) is sealed by adhesive tape.

The inner box (200) is configured by a top plate (210) and an inner side plate (220) and is fitted closely through the opening of the outer box (100). The inner box (200) has an open bottom. The top plate (210) is sealed by putting the contents to be packaged in it and then bonding it with tape.

According to this embodiment, when the inner box (200) is completely fitted into the outer box (100), the height of the upper surface (210a) of the upper plate of the inner box (200) and the upper surface (120a) of the outer plate of the outer box may be the same as shown in FIG. 3.

According to another feature of the present invention, the outer side panel (120) of the outer box may be composed of two layers. And the inner side panel (220) of the inner box may also be composed of two layers. It is generally preferable that these be made by folding a single sheet of cardboard in half to form two layers (see Fig. 5).

According to this configuration, when the outer box (100) and the inner box (200) are assembled, the side panels of the cooler box are made of a total of four layers of cardboard (see Fig. 3). The outer side panels (120) and the inner side panels (220) are made of two layers by inserting a folding line (sheath) into the cardboard and then folding it 180°.

According to another feature of the present invention, the bottom plate and top plate of the cooler box are also made of four layers like the side plates. An auxiliary bottom plate (130, 140) made of two sheets of corrugated cardboard is interposed on the upper surface of the bottom plate of the outer box, and an auxiliary top plate (230, 240) made of two sheets of corrugated cardboard is interposed on the lower surface of the top plate of the inner box. The corrugated cardboard used for the auxiliary bottom plate (130, 140) and the auxiliary top plate (230, 240) is coated with aerogel on one or both sides. The auxiliary bottom plate (130, 140) and the auxiliary top plate (230, 240) are illustrated as two sheets, but are not limited thereto.

Below, the configuration for installing the auxiliary floor plate (130, 140) and the auxiliary top plate (230, 240) is described. When installing the auxiliary floor plate (130, 140) and the auxiliary top plate (230, 240), measures may be required to minimize the gap.

In order to install the auxiliary floor plate (130, 140), a first step (150) is formed between the first outer side plate (121) and the second outer side plate (122) that constitute the outer side plates. The auxiliary floor plate (130, 140) is fitted into the space provided by the first step (150) in a fitting manner (or in a grooved manner).

In addition, in order to install the auxiliary top plate (230, 240), a second step (250) is formed between the first inner side plate (221) and the second inner side plate (222) that constitute the inner side plate. The auxiliary top plate (230, 240) is fitted into the space provided by the second step (250) in a fitting manner (or in a recessed manner).

In this way, there can be no gap between the upper and lower joints of the cooler box, thereby increasing the heat retention effect.

Figure 5 is a development view of the main body of the outer box (100) or the inner box (200) of the cooler box using cardboard according to an embodiment of the present invention. The development views of the outer box (100) and the inner box (200) have the same structure, except for the difference in the specifications. Hereinafter, the development view configuration of the outer box (100) and the inner box (200) will be described.

Looking at the development diagram, the side forming plates (1, 2, 3, 4) are connected in the center, and the adhesive part (5) is connected integrally on one side.

A flat forming plate (11, 12, 13, 14) forming a bottom plate or a top plate is connected to the lower portion of each side forming plate (1, 2, 3, 4). The flat forming plates (11, 12, 13, 14) have a structure similar to the bottom plate or the top plate of a general cardboard box, but the installation phases (H1, H2) are slightly different so that one side (12, 14) can be folded downward and the other side (11, 13) upward during sealing (see FIGS. 7 to 8).

A double-layer forming plate (21, 22, 23, 24) is connected to the lower portion of each side forming plate (1, 2, 3, 4) to form the side plates into two layers. The double-layer forming plates (21, 22, 23, 24) are completely folded at an angle of 180° with respect to the side forming plates (1, 2, 3, 4). Therefore, a thickness compensating portion (31, 32, 33, 34) is provided between the double-layer forming plates (21, 22, 23, 24) and the side forming plates (1, 2, 3, 4) to compensate for the thickness of the corrugated cardboard. The thickness compensating portion (31, 32, 33, 34) is provided with a sheath to facilitate folding, and its width (W) corresponds to the thickness of two sheets of corrugated cardboard combined.

Meanwhile, when the double-layer forming plate (21, 22, 23, 24) is folded at an angle of 180°, pressure projections (41, 51) are formed on both sides so that it can be stably fixed to the inner surface of the side forming plate (1, 2, 3, 4).

The pressurizing projections (41, 51) are provided on the upper side of the double-layer forming plates (21, 22, 23, 24), and are also installed in a staggered manner, that is, in a zigzag manner. The pressurizing projections (41, 51) are fixed tightly to the side forming plates (1, 2, 3, 4) by being crushed when the double-layer forming plates (21, 22, 23, 24) are folded and fixed.

Figures 6 to 8 are diagrams illustrating the process of packaging contents step by step.

The inner box (200) is fitted inside the outer box (100). The bottom plate of the outer box (100) is sealed. After putting the contents in, the auxiliary top plate (230, 240) is placed on the step created by the second step (250) (see FIG. 6), and one top plate (210') of the inner box (200) is covered thereon (see FIG. 7). Then, the remaining top plate (210") is covered and sealed by bonding with tape (T) (see FIG. 8).

The length of each top plate (210) and bottom plate (11) of the inner box (200) and outer box (100) must be set so that the two ends are in close contact with each other when sealed, without creating a gap.

Additionally, if necessary, the edge boundary of the inner box (200) and the outer box (100) may also be finished with taping.

With this configuration, it is possible to obtain a cooling effect that is not only comparable to that of ordinary Styrofoam, but even better. Since it is made of recyclable cardboard, it can also contribute to environmental protection.

The configurations described and illustrated above are merely preferred embodiments based on the technical idea of the present invention. Those skilled in the art will be able to make various modifications based on common technical knowledge, but it should be noted that these may be included in the scope of protection of the present invention. The embodiments disclosed above may be combined in various ways, and all possible combinations are within the scope of the present invention.

1,2,3,4 : Side forming plate 5 : Adhesive part
11,12,13,14: Flat plate 21,22,23,24: Double-layer plate
31,32,33,34: Thickness compensation part 41,51: Pressing projection
100: Outer box 110: Bottom plate
120: Outer side plate 121,122: 1st and 2nd outer side plates
130,140: Auxiliary floor plate 150: 1st step
200: Inner box 210: Top plate
220: Inner side plate 221,222: 1st and 2nd inner side plates
230,240: Auxiliary top plate 250: 2nd step
K: Aerogel coating layer

Claims (4)

An outer box having an open top, comprising a bottom plate and an outer side plate; and
Including an inner box composed of an inner side plate and a top plate, which is closely fitted into the opening of the outer box;
The outer side panel of the above outer box is folded in half to form two layers of a first outer side panel (121) and a second outer side panel (122);
The inner side panel of the inner box is also folded in half to form two layers of a first inner side panel (221) and a second inner side panel (222);
Two auxiliary floor plates (130, 140) are inserted into the upper surface of the floor plate of the above outer box;
Two auxiliary top plates (230, 240) are inserted into the bottom of the top plate of the inner box;
A first step (150) is formed between the first outer side plate (121) and the second outer side plate (122), so that the auxiliary floor plate (130, 140) is fitted in a recessed manner into the space provided by the first step (150);
A second step (250) is formed between the first inner side plate (221) and the second inner side plate (222), so that the auxiliary top plate (230, 240) is fitted in a recessed manner into the space provided by the second step (250);
On the second outer side plate (122) and the second inner side plate (222), pressure projections (41, 51) are formed in both directions;
The above-mentioned pressure projections (41, 51) are formed to be misaligned with respect to the adjacent second outer side plates (122), and the above-mentioned pressure projections (41, 51) are formed to be misaligned with respect to the adjacent second inner side plates (222);
A cooler box using cardboard, characterized in that the outer box and inner box are made of cardboard coated with aerogel on one or both sides.
delete In the first paragraph,
A cold storage box using cardboard, characterized in that the upper surface of the top plate of the inner box and the upper part of the side plate of the outer box are the same height when the inner box is completely fitted into the outer box.
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